diff --git a/map2loop/config.py b/map2loop/config.py
index 21d9e536..5207483f 100644
--- a/map2loop/config.py
+++ b/map2loop/config.py
@@ -71,6 +71,26 @@ def __init__(self):
             "objectid_column": "ID",
         }
 
+    def __getitem__(self, key):
+        """
+        Get the value of a key in the config
+
+        Args:
+            key (str): The key to get the value of
+
+        Returns:
+            dict: The value of the key
+        """
+        if key == "structure":
+            return self.structure_config
+        if key == "geology":
+            return self.geology_config
+        if key == "fault":
+            return self.fault_config
+        if key == "fold":
+            return self.fold_config
+        return None
+
     def to_dict(self):
         """
         Convert the config dictionary to a dictionary
diff --git a/map2loop/fault_orientation.py b/map2loop/fault_orientation.py
index 16692a19..1370eae9 100644
--- a/map2loop/fault_orientation.py
+++ b/map2loop/fault_orientation.py
@@ -92,3 +92,12 @@ def calculate(
             orientations.loc[i, "Y"] = p.y
 
         return orientations.drop(columns="geometry")
+
+
+__json__ = [
+    {
+        'classname': "FaultOrientationNearest",
+        'description': 'Assigns the nearest fault orientation to a fault',
+        'parameters': [],
+    }
+]
diff --git a/map2loop/project.py b/map2loop/project.py
index 02630ebc..6b57efeb 100644
--- a/map2loop/project.py
+++ b/map2loop/project.py
@@ -170,8 +170,17 @@ def __init__(
         # Assign filenames
         if use_australian_state_data != "":
             # Sanity check on state string
-            if use_australian_state_data in ["WA", "SA", "QLD", "NSW", "TAS", "VIC", "ACT", "NT"]:
-                self.map_data.set_filenames_from_australian_state(use_australian_state_data)
+            if use_australian_state_data.upper() in [
+                "WA",
+                "SA",
+                "QLD",
+                "NSW",
+                "TAS",
+                "VIC",
+                "ACT",
+                "NT",
+            ]:
+                self.map_data.set_filenames_from_australian_state(use_australian_state_data.upper())
             else:
                 raise ValueError(
                     f"Australian state {use_australian_state_data} not in state url database"
diff --git a/map2loop/sampler.py b/map2loop/sampler.py
index 9d97d73d..3b290625 100644
--- a/map2loop/sampler.py
+++ b/map2loop/sampler.py
@@ -6,7 +6,7 @@
 import numpy
 from .m2l_enums import Datatype
 from .mapdata import MapData
-from typing import Optional
+from typing import Optional, Union
 
 
 class Sampler(ABC):
@@ -101,7 +101,7 @@ class SamplerSpacing(Sampler):
     """
 
     @beartype.beartype
-    def __init__(self, spacing: float = 50.0):
+    def __init__(self, spacing: Union[float, int] = 50.0):
         """
         Initialiser for spacing sampler
 
@@ -174,3 +174,17 @@ def sample(
 
         df.reset_index(drop=True, inplace=True)
         return df
+
+
+__json__ = [
+    {
+        'classname': "SamplerDecimator",
+        'description': 'Sample by decimation',
+        'parameters': [{'name': 'decimation', 'type': 'number', 'value': 1}],
+    },
+    {
+        'classname': 'SamplerSpacing',
+        'description': 'Sample using a fixed spacing along a line or polygon',
+        'parameters': [{'name': 'spacing', 'type': 'number', 'value': 50.0}],
+    },
+]
diff --git a/map2loop/sorter.py b/map2loop/sorter.py
index 2d6e05b5..6f5ba774 100644
--- a/map2loop/sorter.py
+++ b/map2loop/sorter.py
@@ -510,3 +510,13 @@ def sort(
                 dd.add_node(edge[1])
                 dd.add_edge(edge[0], edge[1])
         return list(nx.dfs_preorder_nodes(dd, source=list(dd.nodes())[0]))
+
+
+__json__ = [
+    {'classname': "SorterUseHint", 'decription': '', 'parameters': []},
+    {'classname': "SorterUseNetworkX", 'decription': '', 'parameters': []},
+    {'classname': 'SorterAgedBased', 'decription': '', 'parameters': []},
+    {'classname': 'SorterAlpha', 'decription': '', 'parameters': []},
+    {'classname': 'SorterMaximiseContacts', 'decription': '', 'parameters': []},
+    {'classname': 'SorterObservationProjections', 'decription': '', 'parameters': []},
+]
diff --git a/map2loop/thickness_calculator.py b/map2loop/thickness_calculator.py
index af016800..beb1245a 100644
--- a/map2loop/thickness_calculator.py
+++ b/map2loop/thickness_calculator.py
@@ -615,3 +615,23 @@ def compute(
                 output_units.loc[output_units["name"] == unit, "ThicknessStdDev"] = -1
 
         return output_units
+
+
+__json__ = [
+    {
+        'classname': "ThicknessCalculatorAlpha",
+        'description': 'Calculate thickness using shortest map distance between basal contacts',
+        'parameters': [],
+    },
+    {
+        'classname': "InterpolatedStructure",
+        'description': 'Calculate thickness by interpolating structures and projecting map distance into 3d',
+        'parameters': [],
+    },
+    {
+        'classname': "StructuralPoint",
+        'description': 'Calculates thickness for each structural measurement by projecting a line across\n'
+        + 'stratigraphy and projecting the map thickness using the dip',
+        'parameters': [],
+    },
+]
diff --git a/map2loop/throw_calculator.py b/map2loop/throw_calculator.py
index 96ca4605..3ff049dd 100644
--- a/map2loop/throw_calculator.py
+++ b/map2loop/throw_calculator.py
@@ -97,3 +97,12 @@ def compute(
             lambda row: 100 if row["avgDisplacement"] == -1 else row["avgDisplacement"], axis=1
         )
         return faults
+
+
+__json__ = [
+    {
+        'classname': "ThrowCalculatorAlpha",
+        'description': "ThrowCalculator class which estimates fault throw values based on units, basal_contacts and stratigraphic order",
+        'parameters': [],
+    }
+]